We divide 20341570 by 81
We want to figure out the number of times 20341570 can be divided by 81.

Going ahead to step 1:
If we divide 2 by 81, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 81

Advancing to step 2:
If we divide 20 by 81, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 20 after subtracting 0 from 20.
Grab the next digit (3) from the dividend, add it to 20, then carry on: 203 / 81

Advancing to step 3:
81 can be fit into 203 2 times, resulting in a remainder of 41.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 162 from 203, we get 41.
Grab the next digit (4) from the dividend, add it to 41, then carry on: 414 / 81

Advancing to step 4:
81 goes into 414 5 times with a remainder of 9.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
If we take 405 away from 414, we end up with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 81

Step 5:
The number 81 fits into 91 1 times, leaving a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 251.0
Deduct 81 from 91 and we're left with 10.
Include the next digit (5) from the dividend after 10, then repeat: 105 / 81

On to step 6:
When dividing 105 by 81, we get 1 with a remainder of 24.
The number 1 becomes the next digit in our result. 
Result so far: 2511.0
Subtract 81 from 105 to get 24.
Append the next digit (7) from the dividend to 24 and continue with: 247 / 81

Moving on to step 7:
If we divide 247 by 81, we get 3 and a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 25113.0
The remainder is 4 after subtracting 243 from 247.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 81

Let's proceed to step 8:
81 can be fit into 40 0 times, resulting in a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 251130.0
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 9:
When dividing 400 by 81, we get 4 with a remainder of 76.
The number 4 becomes the next digit in our result. 
Result so far: 251130.4
Subtracting 324 from 400 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 10:
81 can be fit into 760 9 times, resulting in a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 251130.49
If we subtract 729 from 760, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 11:
If we divide 310 by 81, we get 3 and a remainder of 67.
Put 3 as the next digit of the answer. 
Result so far: 251130.493
Subtract 243 from 310 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 12:
81 can be fit into 670 8 times, resulting in a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 251130.4938
If we subtract 648 from 670, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 13:
81 can be fit into 220 2 times, resulting in a remainder of 58.
Record the quotient 2 as the next digit in the result. 
Result so far: 251130.49382
Subtracting 162 from 220 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 14:
The number 81 fits into 580 7 times, leaving a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 251130.493827
If we take 567 away from 580, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 15:
When dividing 130 by 81, we get 1 with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 251130.4938271
Subtracting 81 from 130 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 16:
81 can be fit into 490 6 times, resulting in a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 251130.49382716
Subtract 486 from 490 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 251130.49382716 with a balance of 4e-09.